<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>login</title>
</head>
<body>
	<form action="http://localhost:8080/mvc_demo/servlet/ActionServlet" method="post">
		用户名：<input type="text" name="username">
		密码：<input type="password" name="password">
		<input type="hidden" name="sign" value="mvc.form.LoginForm">
		<input type="submit">
	</form>
</body>
</html>